Oh, for Fvck sake... it's CB... I'd be disappointed if I heard a repeater in Sydney that didn't have at least two fuckwits on it.
a doplar direction finder will set you back about $5000 ea. 3 x $5000 = use a handheld with a signal meter and a 6 element beam. I have a few TX-475s portables that work a treat. They were good enough to find Marcus in a block of units, Mongy Mick in the back room of his house and a number of other tards without external antennae on their house.
A dopler unit is not a complex piece of equipment. Dick Smith used to have a kit. In fact I have one in my shed which I haven't used for a couple of years. I used to use it all the time for competitions at Mt Gambier. I'm willing to part with it for $100 if anybody wants to play, find the fvckwit.
If you want to build your own, then I can also tell you how to do this too.
Nothing substitutes for a close in 5 element beam with a 80dB variable attenuator for close in work.
Down in MT Gambier on the Queens Birthday long Weekend, the Australian RDF (foxhunting) comps take place.
Single leg foxhunts over 20km can finish as quickly as 15 minutes. You're average moron is on a channel for at least 30 minutes.
And this is the good old fashioned hard way to find a dickhead.
Those of us who are a little more enlightened just log carrier keys.
Each radio has a different "fingerprint when it transmits. It is easy to log them and assign an ID on a computer to each one.
When you have an anonymous moron, who is actually a regular user somewhere and you have his radio's signature, then it's easy to name, and shame him to his victims.
Once you've found your resident idiot, there's a whole range of cool things you can do to make their life interesting.
27Mhz, we used to make splatterboxes. They ran on a 9V battery and you just threw them into the victim's front garden or one his roof and he couldn't hear a think on the band for a couple of days. I built some slightly larger transmitters that you could just place in a nearby park are neighbours font yard bush where they would never be found, and then could come back and change the batteries.
they had a range of about 200 metres.
I've not made any needful things for UHF CB since I don't use it and there isn't any one moron that has attracted my attention. Pretty hard when I don't listen to them.
But if anybody has a need for a special little box, I'm full of evil ideas.